Results 21 to 30 of about 586 (214)

Modeling of grain-oriented Si-steel and amorphous alloy iron core under ferroresonance using Jiles–Atherton hysteresis method

AIP Advances, 2018
Amorphous alloy is increasingly widely used in the iron core of power transformer due to its excellent low loss performance. However, its potential harm to the power system is not fully studied during the electromagnetic transients of the transformer ...
Wenxia Sima, Mi Zou, Ming Yang, Qing Yang, Daixiao Peng   +4 more
doaj   +1 more source

Optimization and Transient Analysis of Distributed Asynchronous Condenser

IEEE Access, 2022
After the high proportion of new energy is connected, the decrease of the proportion of synchronous machine in power system will cause a series of stability hazards, such as the lack of inertia.
Zhipeng Liu, Haibing Qi, Mingyu Xu, Xingyuan Jiang, Yanling Lv   +4 more
doaj   +1 more source

Synthesis of a system for secondary control of a rotor with an electromagnetic bearing

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
The control system for rotor electromagnetic suspension is considered. The parametrical synthesis of regulators is made by the method of the secondary control systems.
Yu. A. Makarichev, A. V. Starikov, I. S. Tkachenko   +2 more
doaj   +1 more source

Observable Signature of Merging Stellar-mass Black Holes in Active Galactic Nuclei

The Astrophysical Journal, 2023
The origin of stellar-mass black hole mergers discovered through gravitational waves is being widely debated. Mergers in the disks of active galactic nuclei (AGNs) represent a promising source of origin, with possible observational clues in the ...
Hiromichi Tagawa, Shigeo S. Kimura, Zoltán Haiman, Rosalba Perna, Imre Bartos   +4 more
doaj   +1 more source

General issues of ensuring electromagnetic compatibility of aircraft on-board equipment [PDF]

E3S Web of Conferences
The article examines the effect of electromagnetic interference on the electrical components of the aircraft from the point of view of external and internal electromagnetic environments. The external electromagnetic environment consists of high-intensity
Volkova Tatiana, Ou Jing
doaj   +1 more source

Low-Frequency Electromagnetic Transients Characterization Using Stockwell Transform

Applied Sciences
This paper investigates characterization of low-frequency electromagnetic transients occurring in power networks with the Stockwell transform (S-transform). Three characteristic cases of real network events are considered.
Adnan Mujezinović, Ajdin Alihodžić, Maja Muftić Dedović, Nedis Dautbašić   +3 more
doaj   +1 more source

Transient electromagnetic sounding for groundwater

Geophysics, 1986
Abstract The feasibility of using the transient electromagnetic sounding (TS or TDEM) method for groundwater exploration can be studied by means of numerical models. As examples of its applicability to groundwater exploration, we study four groundwater exploration problems: (1) mapping of alluvial fill and gravel zones over bedrock ...
Fitterman, David V., Stewart, Mark T.
openaire   +4 more sources

Manipulating Interfacial Stability via Preferential Absorption for Highly Stable and Safe 4.6 V LiCoO2 Cathode

Nano-Micro Letters
Highlights A novel electrolyte design strategy for high voltage and high safe LiCoO2 (LCO) cathode based on highest occupied molecular orbital and LCO absorption energy descriptor was proposed.
Long Chen, Xin He, Yiqing Chen, Youmin Hou, Yujie Zhang, Kangli Wang, Xinping Ai, Yuliang Cao, Zhongxue Chen   +8 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Development of a vector control system based on the DFSMC for the study of transients in the conditions of creating a digital twin of the power system [PDF]

E3S Web of Conferences
The article considers an event to increase throughput using smart grid technologies (FACTS) based on a combined vector control device for mode parameters (power flow) based on an asynchronous electromechanical frequency converter (DFSMC).
Suprunov Igor, Novikov Nikolay, Novikov Alexander   +2 more
doaj   +1 more source